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प्रश्न
Define Radius of curvature of the spherical mirror
उत्तर
The distance between the centre of curvature and between the centre of curvature and pole. It is measured in meter or cm.
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संबंधित प्रश्न
A student focused the Sun rays using an optical device 'X' on a screen S as shown.
From this it may be concluded that the device 'X' is a (select the correct option)
(A) Convex lens of focal length 10 cm.
(B) Convex lens of radius of curvature 20 cm.
(C) Convex lens of focal length 20 cm.
(D) Concave mirror of focal length 20 cm.
Define the following term in the context of spherical mirrors:- Pole
Explain the following term related to spherical lenses:- principal axis
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What name is given to the distance between spherical mirror and carbon paper?
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
What will be the focal length of this mirror?
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
Which type of spherical mirror will it provide?
A 50 cm tall object is at a very large distance from a diverging lens. A virtual, erect and diminished image of the object is formed at a distance of 20 cm in front of the lens. How much is the focal length of the lens?
A ray of light travels from a denser medium to a rarer medium. How will it bend?
Which are the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain with the help of suitable ray diagrams.
An optical device has been given to a student and he determines its focal length by focusing the image of the sun on a screen placed 24 cm from the device on the same side as the sun. Select the correct statement about the device.
(A) Convex mirror of focal length 12 cm
(B) Convex lens of focal length 24 cm
(C) Concave mirror of focal length 24 cm
(D) Convex lens of focal length 12 cm
If a spherical mirror breaks, what type of mirrors are the individual pieces?
State the number of images of an object placed between two mirrors, formed in each case when mirrors are inclined to each other at (a) 90°, and (b) 60°.
Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
Name the kind of mirror used to obtain:
A virtual and diminished image
Name the kind of mirror used to obtain:
A real and diminished image.
Upto what maximum distance from the pole the image in a convex mirror can be obtained? what will be the location of object then ?
The image formed by a convex mirror is
The focal length of a concave mirror is 10 cm. Find its radius of curvature.
An object of height 2 cm is placed at a distance of 20 cm in front of a concave mirror of a focal length of 12 cm. Find the position, size, and nature of the image.
The sun is seen before the sunrise and after the sunset.
Choose the correct alternative and rewrite the following:
Mirror used by a dental surgeon is ..........................
Select the correct option:
Which mirror is used in periscope?
Define the following term in relation to concave mirror.
Principal axis
What is a mirror formula?
Define the term Normal.
The following Figure shows a concave mirror MM' on which a ray of light incident from a point P gets reflected to meet the principle axis at O.
(a) Find, by construction, the position of the centre of curvature of the concave mirror.
(b) Write down the value for the radius of curvature of the mirror.
(c) Calculate the focal length of the mirror.
(d ) Which relation is used in deducing the focal length from the radius of curvature?
The spherical mirror used as a rear view mirror in the vehicle is
A student traces the path of a ray of light passing through a rectangular slab.
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For measuring the angle of incidence, he must position the protractor in the manner shown in the figure:
An object is placed at a distance of 0.25 m
in front of a plane mirror. The distance between the object and image will be ______.
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
Visit a nearby hospital. You can also visit the clinic of an ENT specialist, or a dentist. Request the doctor to show you the mirrors used for examining ear, nose, throat and teeth. Can you recognise the kind of mirror used in these instruments?
